Observation by David Strange: NGC 474 - Arp 227 A Ring Galaxy

Uploaded by

David Strange

Observer

David Strange

Observed

2025 Dec 10 - 19:28

Uploaded

2025 Dec 15 - 13:45

Objects

NGC474

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Constellation

Pisces

Field centre

RA: 01^h20^m
Dec: +03°24'
Position angle: +3°28'

Field size

0°28' × 0°21'

Equipment

RC10
ASI1600MM

Exposure

30 x 120s

Location

Salcombe Regis, East Devon

Target name

NGC474

Title

NGC 474 - Arp 227 A Ring Galaxy

About this image

An attempt to pick out the faint concentric rings around the main galaxy which has interacted with NGC470.

Halton Arp points out that there are a pair of quasars 3C39 & 3C37 that have similar redshifts (within 0.09 of each other) aligned across the centre of the galaxy. Arp cites this as being a 1 in 500 million chance of this being an accidental configuration. (Outside of this field of view).

Two additional quasars are however seen here south east of NGC470 (0117+031)

Files associated with this observation

NGC474_20251210_dgs20.jpg (287.1 kB)

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Dominic Ford

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